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Why does one need to study about soil and what is its importance?
You would be aware that, from the dawn of agriculture, cultivators were attracted to fertile soils of river valleys. Early Greek and Roman writers have described farming systems that involved leguminous plants, use of ashes and sulphur as soil su pplements. German chemist Justus von Liebig (1840) found that crop yields were increased by adding minerals to soils. He proposed that the mineral elements in the soil added as manures and fertilizers are essential for plant growth. According to him certain factors are essential for plant growth and if any one of these factors is limiting (controlling) plant production would be reduced. Soils are studied today to ascertain which of these factors is below desired level and how its limitation to plant growt h can be removed.
Define Role of Glucocorticoids in controlling gene expression? Glucocorticoids are another class of hormones involved in the regulation of lipogenic enzymes, but their role in
Q. How does the universality of the genetic code make the recombinant DNA technology possible? The universality of the genetic code refers to the fact that all living beings ha
A genetic trait which is considered to be harmful in the present day might prove to be beneficial in future. For example by removing the trait for sickle cell we may increase the s
Why are euglenas involved in polemics related to their taxonomic classification? Euglenas are included in taxonomic polemics because they tend to be classified sometimes as pro
You roll two dice. What is the probability that the sum of the numbers on both dice will be 5?
The synthesis of the three fundamental polymers of life, DNA, RNA and protein, is template-directed. This means that - Answer A. the monomers are assembled one by one in a sequence
We are told that every surface we touch is teeming with bacterial cells, and bacteria are found in the pools we swim in, the water we wash with, and on the hands of friends. Why ar
Composition The present day composition of atmosphere is the product of a lengthy evolutionary process that began more than four billion years ago. It is composed of a mixture
Graphs are a way to convey information and trends in a convenient fashion. For this week's Discussion Board you should search the internet for a graph related to biology. Provide u
Make a detailed study on phylum protozoa taking an example with clear labeled diagram
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